structural and magnetic properties of purine and pyrimidine nucleotides (cmp, ump, dtmp, amp, gmp, imp) were studied at different levels of ab initio molecular orbital theory. these calculations were performed at the hartree-fock level and density functional b3lyp methods. geometries were fully optimized by following cs symmetry restrictions. the standard 6-31g** basis set which includes polari...

This paper outlines an implementation of restartable atomic sequences on the NetBSD operating system as a mechanism for implementing atomic operations in a mutual-exclusion facility on uniprocessor systems. Kernel-level and user-level interfaces are discussed along with implementation details. Issues associated with protecting restartable atomic sequences from violation are considered. The perf...